Flow Restrictor Valve for GC, High Purity Fluid Control’s guide

The gas flow restrictors are unique in that they channel through thousands of pores instead of just one. This reduces gas exit velocity and results in a more laminar flow. Because the gases move through the myriad of pores, flow restrictors are virtually impervious to erosion or wear and are almost certain to retain the original calibration. The Flow Restrictors provide a compact design and long-lasting flow control. As gas and particulate move slower through the element, porous metal flow restrictors incur less wear and last longer.

Orifices can be easily clogged up by a single grain of foreign matter. The flow restrictors, on the other hand, can tolerate a large build-up of particulate before flow is affected. The high media surface area and low gas velocity enable gas to find its way around obstructions.

Fluid Control’s guide to UHPLCS Flow Restrictors, High Purity